The Industrial USB TO RS485/422 Converter is a robust and versatile communication module engineered for seamless and secure data exchange between USB host devices and RS485 or RS422 industrial networks. Designed by Waveshare, this converter leverages the original FT232RL chip from FTDI for stable, high-speed performance, and features a high-performance SP3485 transceiver. It incorporates advanced galvanic isolation (unibody power isolation and ADI magnetic isolation) along with comprehensive multi-protection circuits including TVS for ESD, surge protection, lightning-proof capabilities, and a self-recovery fuse. This design enables reliable half-duplex RS485 and full-duplex RS485/RS422 communication in demanding environments.

• Original FT232RL Chip: Ensures stable, high-performance communication and broad OS driver support.
• Versatile RS485/422 Support: Supports both 2-wire half-duplex and 4-wire full-duplex RS485, as well as RS422 communication.
• Advanced Galvanic Isolation: Includes unibody power isolation and ADI magnetic isolation for high-speed, safe, and clean data transmission.
• Comprehensive Multi-Protection: TVS diodes, surge protection, lightning-proof circuit, and a self-recovery fuse guard connected devices.
• High-Speed Communication: Supports baud rates up to 3Mbps for fast data transmission.
• Automatic Transceiver Control: Built-in auto Tx/Rx control for RS485 half-duplex mode.
• Robust Transceiver: Features the original SP3485 RS485/RS422 transceiver chip.
• Industrial Screw Terminals: Sturdy interface for secure and reliable field wiring.
• USB-A Connector: Standard plug-and-play USB host connectivity.

• Communication Chip: FT232RL (Original FTDI)
• RS485/422 Transceiver: Original SP3485
• USB Port: USB-A male connector (USB 2.0 compatible)
• Device Port: RS485/422 Screw Terminal
• Supported Standards: RS485 (2-wire half/full-duplex), RS422 (4-wire full-duplex)
• Baud Rate: Up to 3Mbps
• Isolation: Unibody Power Isolation + ADI Magnetic Isolation
• Protection: TVS, Surge, Lightning-Proof, Self-Recovery Fuse
• Auto Control: Auto Tx/Rx control for RS485 half-duplex
• Indicators: PWR, TXD, RXD
• Operating Temperature: Industrial range (check product page)
• Dimensions: Compact (refer to product outline)

• Reliability & Integrity: Stable, error-free transmission even in noisy electrical environments.
• Safety: Extensive protection from electrical faults minimizes downtime and equipment damage.
• Versatility: Compatible with multiple communication standards and network types.
• Ease of Integration: Auto-transceiver control and standard screw terminals simplify setup.
• High Performance: Fast data rates and long-distance communication (up to 1.2km).
• Cross-Platform Compatibility: FTDI drivers ensure seamless OS integration.

• Industrial Automation: Connecting PLCs, HMIs, VFDs, and industrial sensors.
• Building Automation: Interfacing with HVAC, fire alarms, and access systems.
• SCADA & Remote Monitoring: Communication with DAQ units and environmental sensors.
• Security Systems: Integrating with PTZ cameras, access control, and alarm panels.
• M2M Communication: Linking machines and controllers in industrial floors.
• Telecom: Debugging/configuring network and communication equipment.
• POS Systems: Connecting printers, scanners, and transaction devices.

• Operating Systems:
  • Windows: 7, 8, 8.1, 10, 11
  • Linux: Ubuntu, Debian, CentOS, Raspberry Pi OS
  • macOS: Commonly supported versions
  • Android: With host mode enabled
• USB Interface: USB 1.1 / 2.0 / 3.0 ports
• RS485/422 Devices: Modbus RTU/ASCII, PLCs, industrial sensors, BMS, and more
• Power: Powered via USB port (no external supply required)

• PWR LED: Steady light when USB power is connected and device is on.
• TXD LED: Blinks during data transmission from USB to RS485/422.
• RXD LED: Blinks during data reception from RS485/422 to USB.